Painting Out Climate Change With Cool Roofs

 It makes so much difference and is so easy to do that NYC is in the midst of a massive effort to paint all its roofs white.

Since 2010, NYC °CoolRoofs has coated 2.6 million square feet of New York City rooftop, and a million more square feet will be painted this year ... all by volunteers.

From this nyc.gov link:

In New York City, for example, roofs constitute 11.5% of the total area, or roughly 944.3 billion square feet.